Vinicius,

The worst orientation is to have the elements of your Yagi parallel to a metal mast. So unless you¹re using a fiberglass mast or cross-boom, mount the antenna so that the elements are perpendicular to the mast.

If you¹re mounting the antenna on top of a vertical mast, orient the antenna so the elements are horizontal. If you aren¹t using an elevation rotor, you may want to slope the boom of the antenna so that it points up from the horizon by about 15 degrees.

If you¹re mounting the antenna on a horizontal cross-boom, so that you can use an elevation rotor, orient the antenna so the elements are vertical.

Many of the satellites have a monopole or dipole antenna and are spinning or tumbling, so you¹ll have fading regardless of whether you use horizontal or vertical position/polarization.

Hope this helps.

73, Steve N9IP -- Steve Belter, seb@wintek.com

On 11/18/15, 2:08 PM, "AMSAT-BB on behalf of B J" <amsat-bb-bounces@amsat.org on behalf of va6bmj@gmail.com> wrote:

On 11/18/15, Vinicius Leite pu4vlt@gmail.com wrote:

...

Hi Folks!

I'm novice and sorry if this is a dumb question.

I have a regular 7 Element Yagi UHF antenna, and i would like to know what is the best position to receive LEO birds: horizontal, vertical or 45 degrees to the right?

I've googled this, but i found a lot of different opinions.

On the field, if somebody tested this options, can please share the results with me?

<snip>

I use a hand-held Arrow dual-band yagi for satellites. During a pass, I have to rotate the antenna around its axis in order to get the best results.

73s

Bernhard VA6BMJ @ DO33FL _______________________________________________ Sent via AMSAT-BB@amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb